<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org/">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="/vendor/bootstrap-3.4.1/css/bootstrap.min.css">
    <title>Title</title>
</head>
<body>
<nav class="navbar navbar-default">
    <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Brand</a>
        </div>

        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
                <li><a href="#">Link</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">Action</a></li>
                        <li><a href="#">Another action</a></li>
                        <li><a href="#">Something else here</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">Separated link</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">One more separated link</a></li>
                    </ul>
                </li>
            </ul>
            <form class="navbar-form navbar-left">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Search">
                </div>
                <button type="submit" class="btn btn-default">Submit</button>
            </form>
            <ul class="nav navbar-nav navbar-right">
                <li><a href="#">Link</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">Action</a></li>
                        <li><a href="#">Another action</a></li>
                        <li><a href="#">Something else here</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">Separated link</a></li>
                    </ul>
                </li>
            </ul>
        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
</nav>
<div class="container-fluid">
    <div class="row">
        <div class="col-lg-2 h4">
            <ul class="nav nav-pills nav-stacked" th:each="menu : ${menus}">
                <li role="presentation"><a data-toggle="collapse" th:href="'#'+${menu.id}" aria-expanded="false" aria-controls="collapseExample"  th:text="'&gt;'+${menu.content}"></a></li>
                <li>
                    <ul class="nav nav-pills nav-stacked collapse" th:id="${menu.id}"  >
                        <li th:each="item : ${menu.childMenus}" role="presentation"><a th:href="${item.url}" target="mainFrame" th:text="'&nbsp;&nbsp;&nbsp;&nbsp;'+ ${item.content}"></a></li>
                    </ul>
                </li>
            </ul>

        </div>
        <div class="col-lg-10">
            <iframe src="welcomePage" width="100%" name="mainFrame" height="500px" frameborder="0"></iframe>
        </div>
    </div>
</div>

</body>
<script src="/vendor/jquery/jquery-3.5.1.min.js"></script>
<script src="/vendor/bootstrap-3.4.1/js/bootstrap.min.js"></script>
</html>